errors.c

/* Copyright (c) 2008, Tim Post <tinkertim@gmail.com>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * Redistributions of source code must retain the above copyright notice, this
 * list of conditions and the following disclaimer.
 *
 * Redistributions in binary form must reproduce the above copyright notice,
 * this list of conditions and the following disclaimer in the documentation
 * and/or other materials provided with the distribution.
 *
 * Neither the name of the original program's authors nor the names of its
 * contributors may be used to endorse or promote products derived from this
 * software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

#include <stdio.h>
#include <str.h>
#include <stdlib.h>
#include <unistd.h>
#include <stdarg.h>

#include "config.h"
#include "errors.h"
#include "errstr.h"

volatile int cli_errno = CL_EOK;
extern volatile unsigned int cli_quit;

/* Error printing, translation and handling functions */


/* Look up errno in cl_errors and return the corresponding string.
 * Return NULL if not found */
static const char *err2str(int err)
{

        if (NULL != cl_errors[err])
                return cl_errors[err];

        return (char *)NULL;
}

/* Print an error report signifying errno, which is translated to
 * its corresponding human readable string. If errno > 0, raise the
 * cli_quit int that tells the main program loop to exit immediately */

void cli_error(int err, const char *fmt, ...)
{
        va_list vargs;
        va_start(vargs, fmt);
        vprintf(fmt, vargs);
        va_end(vargs);

        if (NULL != err2str(err))
                printf(" (%s)\n", err2str(err));
        else
                printf(" (Unknown Error %d)\n", err);

        /* If fatal, raise cli_quit so that we try to exit
         * gracefully. This will break the main loop and
         * invoke the destructor */
        if (err == CL_EFATAL)
                cli_quit = 1;

        return;

}

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